This is a very cool invention, and it works as the video demonstrates.

Get much more detail HERE

Ever find yourself needing to tar and feather someone, but lacking an angry mob to back you up? Maybe you wish to exact quick and messy physical revenge in a hurry?

As far as I know, this has a fairly unique design among water (well, foam) guns in that it has a breech-loaded cartridge mechanism. The beauty of this is that you can quickly reload with a variety of ammunitions in pre-filled containers. More importantly, once you've fired the gun you can eject the depleted cartridge from the rear of the gun with an extremely satisfying *ka-chunk* sound.